In which of the following environments could microorganisms be found?
A) Air
B) Food
C) Skin of a healthy individual
D) Water
E) All of the above
E) All of the above
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A collective term used for the three layers of membranes surrounding the brain and spinal column is the:
a. dura mater. b. meninges. c. arachnoid. d. pia mater.
Differentiate between Parazoa and Eumetazoa.
A. Parazoa have only one kind of cell during their life cycle whereas Eumetazoa have many kinds of cells throughout their life cycle. B. The various cells types of Parazoa do not form permanent associations into tissues during their life cycle, whereas Eumetazoa possess true, stable tissues. C. Parazoans are only haploid during their life cycle, whereas eumetazoans are diploid with haploid sex cells at various stages of their life cycle. D. Parazoans invert during their development whereas eumetazoans do not invert at any time during their life cycle. E. Parazoans have mobile gametes while eumetazoans do not.
The earliest recorded direct studies of marine biology are attributed to:
a. the Greeks. b. the Catholic Church. c. Arabian philosophers. d. Micronesian mariners. e. the Chinese.
Plasma
A. is the liquid portion of blood in which blood cells are suspended. B. contains albumin and globulins. C. contains fibrinogen. D. is mostly water. E. All of the choices are correct.